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  <span class="target" id="module-eventmq.utils.classes"></span><div class="section" id="classes-utility-classes">
<h1><code class="xref py py-mod docutils literal"><span class="pre">classes</span></code> &#8211; Utility Classes<a class="headerlink" href="#classes-utility-classes" title="Permalink to this headline"></a></h1>
<p>Defines some classes to use when implementing ZMQ devices</p>
<dl class="class">
<dt id="eventmq.utils.classes.HeartbeatMixin">
<em class="property">class </em><code class="descclassname">eventmq.utils.classes.</code><code class="descname">HeartbeatMixin</code><span class="sig-paren">(</span><em>*args</em>, <em>**kwargs</em><span class="sig-paren">)</span><a class="headerlink" href="#eventmq.utils.classes.HeartbeatMixin" title="Permalink to this definition"></a></dt>
<dd><p>Provides methods for implementing heartbeats</p>
<dl class="method">
<dt id="eventmq.utils.classes.HeartbeatMixin.__init__">
<code class="descname">__init__</code><span class="sig-paren">(</span><em>*args</em>, <em>**kwargs</em><span class="sig-paren">)</span><a class="headerlink" href="#eventmq.utils.classes.HeartbeatMixin.__init__" title="Permalink to this definition"></a></dt>
<dd><p>Sets up some variables to track the state of heartbeaty things</p>
</dd></dl>

<dl class="attribute">
<dt id="eventmq.utils.classes.HeartbeatMixin.__weakref__">
<code class="descname">__weakref__</code><a class="headerlink" href="#eventmq.utils.classes.HeartbeatMixin.__weakref__" title="Permalink to this definition"></a></dt>
<dd><p>list of weak references to the object (if defined)</p>
</dd></dl>

<dl class="method">
<dt id="eventmq.utils.classes.HeartbeatMixin.is_dead">
<code class="descname">is_dead</code><span class="sig-paren">(</span><em>now=None</em><span class="sig-paren">)</span><a class="headerlink" href="#eventmq.utils.classes.HeartbeatMixin.is_dead" title="Permalink to this definition"></a></dt>
<dd><p>Checks the counters for the heartbeats to find out if the thresholds
have been met.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>now</strong> (<a class="reference external" href="https://docs.python.org/library/functions.html#float" title="(in Python v2.7)"><em>float</em></a>) &#8211; The time to use to check if death has occurred. If</td>
</tr>
</tbody>
</table>
<p>:param this value is None, then <code class="xref py py-func docutils literal"><span class="pre">utils.timeutils.monotonic()</span></code> is used.:</p>
<dl class="docutils">
<dt>Returns (bool) True if the connection to the peer has died, otherwise</dt>
<dd>False</dd>
</dl>
</dd></dl>

<dl class="method">
<dt id="eventmq.utils.classes.HeartbeatMixin.reset_heartbeat_counters">
<code class="descname">reset_heartbeat_counters</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#eventmq.utils.classes.HeartbeatMixin.reset_heartbeat_counters" title="Permalink to this definition"></a></dt>
<dd><p>Resets all the counters for heartbeats back to 0</p>
</dd></dl>

<dl class="method">
<dt id="eventmq.utils.classes.HeartbeatMixin.send_heartbeat">
<code class="descname">send_heartbeat</code><span class="sig-paren">(</span><em>socket</em><span class="sig-paren">)</span><a class="headerlink" href="#eventmq.utils.classes.HeartbeatMixin.send_heartbeat" title="Permalink to this definition"></a></dt>
<dd><p>Send a HEARTBEAT command to the specified socket</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>socket</strong> (<a class="reference external" href="https://docs.python.org/library/socket.html#module-socket" title="(in Python v2.7)"><em>socket</em></a>) &#8211; The eMQP socket to send the message to</td>
</tr>
</tbody>
</table>
</dd></dl>

</dd></dl>

<dl class="class">
<dt id="eventmq.utils.classes.ZMQReceiveMixin">
<em class="property">class </em><code class="descclassname">eventmq.utils.classes.</code><code class="descname">ZMQReceiveMixin</code><a class="headerlink" href="#eventmq.utils.classes.ZMQReceiveMixin" title="Permalink to this definition"></a></dt>
<dd><p>Defines some methods for receiving messages. This class will not work if
used on it&#8217;s own</p>
<dl class="attribute">
<dt id="eventmq.utils.classes.ZMQReceiveMixin.__weakref__">
<code class="descname">__weakref__</code><a class="headerlink" href="#eventmq.utils.classes.ZMQReceiveMixin.__weakref__" title="Permalink to this definition"></a></dt>
<dd><p>list of weak references to the object (if defined)</p>
</dd></dl>

<dl class="method">
<dt id="eventmq.utils.classes.ZMQReceiveMixin.recv">
<code class="descname">recv</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#eventmq.utils.classes.ZMQReceiveMixin.recv" title="Permalink to this definition"></a></dt>
<dd><p>Receive a message</p>
</dd></dl>

<dl class="method">
<dt id="eventmq.utils.classes.ZMQReceiveMixin.recv_multipart">
<code class="descname">recv_multipart</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#eventmq.utils.classes.ZMQReceiveMixin.recv_multipart" title="Permalink to this definition"></a></dt>
<dd><p>Receive a multipart message</p>
</dd></dl>

</dd></dl>

<dl class="class">
<dt id="eventmq.utils.classes.ZMQSendMixin">
<em class="property">class </em><code class="descclassname">eventmq.utils.classes.</code><code class="descname">ZMQSendMixin</code><a class="headerlink" href="#eventmq.utils.classes.ZMQSendMixin" title="Permalink to this definition"></a></dt>
<dd><p>Defines some methods for sending messages. This class will not work if used
on it&#8217;s own</p>
<dl class="attribute">
<dt id="eventmq.utils.classes.ZMQSendMixin.__weakref__">
<code class="descname">__weakref__</code><a class="headerlink" href="#eventmq.utils.classes.ZMQSendMixin.__weakref__" title="Permalink to this definition"></a></dt>
<dd><p>list of weak references to the object (if defined)</p>
</dd></dl>

<dl class="method">
<dt id="eventmq.utils.classes.ZMQSendMixin.send">
<code class="descname">send</code><span class="sig-paren">(</span><em>message</em>, <em>protocol_version</em><span class="sig-paren">)</span><a class="headerlink" href="#eventmq.utils.classes.ZMQSendMixin.send" title="Permalink to this definition"></a></dt>
<dd><p>Sends a message</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple">
<li><strong>message</strong> &#8211; message to send to something</li>
<li><strong>protocol_version</strong> (<a class="reference external" href="https://docs.python.org/library/functions.html#str" title="(in Python v2.7)"><em>str</em></a>) &#8211; protocol version. it&#8217;s good practice, but
you may explicitly specify None to skip adding the version</li>
</ul>
</td>
</tr>
</tbody>
</table>
</dd></dl>

<dl class="method">
<dt id="eventmq.utils.classes.ZMQSendMixin.send_multipart">
<code class="descname">send_multipart</code><span class="sig-paren">(</span><em>message</em>, <em>protocol_version</em>, <em>_recipient_id=None</em><span class="sig-paren">)</span><a class="headerlink" href="#eventmq.utils.classes.ZMQSendMixin.send_multipart" title="Permalink to this definition"></a></dt>
<dd><p>Send a message directly to the 0mq socket. Automatically inserts some
frames for your convience. The sent frame ends up looking something
like identity</p>
<blockquote>
<div>(this, &#8216;&#8217;, protocol_version) + (your, tuple)</div></blockquote>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple">
<li><strong>message</strong> (<a class="reference external" href="https://docs.python.org/library/functions.html#tuple" title="(in Python v2.7)"><em>tuple</em></a>) &#8211; Raw message to send.</li>
<li><strong>protocol_version</strong> (<a class="reference external" href="https://docs.python.org/library/functions.html#str" title="(in Python v2.7)"><em>str</em></a>) &#8211; protocol version. it&#8217;s good practice but
you may explicitly specify None to skip adding the version</li>
<li><strong>_recipient_id</strong> (<a class="reference external" href="https://docs.python.org/library/functions.html#object" title="(in Python v2.7)"><em>object</em></a>) &#8211; When using a <code class="xref py py-attr docutils literal"><span class="pre">zmq.ROUTER</span></code> you must
specify the the recipient id of the</li>
</ul>
</td>
</tr>
</tbody>
</table>
</dd></dl>

</dd></dl>

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